Safety-envelop.



.1. A. HALL. SAFETY ENVELOP.

APPLICATION FILED DEC.2I. 1917- 1 ,687. V Patented Nov. 26, 1918;

INVENTOR,

- (@571, A. HaZZ,

WITNESSES ATTORNEY,

JOHN A. HALL, "or" odmmwi Tenne see.-

SAFETY-ENVELOE- v Specification of Letters 1 atent. Pgfi ntgd 26, 1918,

Application filed December 21, 1917. Serial No. 208,276.

To all whom it may concern:

Be it known that 1, JOHN A. HALL, a citizen of the United States, residing at Ooltewah, in the county of James and State of Tennessee, have invented certain new and useful Improvements in Safety-Envelops, of which the following is a specification.

This invention relates to paper receptacles, and more particularly to safety envelops. v

The object of the invention is to provide an envelop so constructed that it cannot be opened without detection thereby preventing valuable documents, money and the like from being surreptitiously removed from the envelop.

Another object is to provide a simple and inexpensive envelop which will fully protect matter placed therein for transmission through the mails.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure 1 represents a rear elevation of an envelop showing one embodiment of this invention in closed operative position ready for mailing,

Fig. 2 is a similar view with parts broken out,

Fig. 3 is a rear elevation with the top and bottom flaps in open position and the end fla s closed,

ig. 4 is a longitudinal section taken on the line 44 of Fig. 1,

Fig. 5 is a transverse section taken on the line 55 of Fig. 1.

In the embodiment illustrated, a front face or envelop body 1 is shown, provided with a top flap 2 having a tongue 3 at its outer edge and a bottom flap 4 having a tongue 5 at its outer edge. These flaps 2 and 4 preferably have beveled side edges as shown at 6, such as is usual in envelope of this character, the terminals of said flaps being truncated as shown at 7 and the tongues 3 and 5 opening in opposite directions, being formed by slitting the envelop transversely from its outer truncated edge n7 shown at 8 and then extending said slit at right angles longitudinally of the flap as shown at 9 forming L-shaped slits so that the tongues 3 and 5 may be interlockingly engaged as shown in Figs. 1 and 2 when the envelop is sealed.

The end flaps 10 and 11 which are preferably of the same length and of a length less than the body, 1, are arranged in overlapping relation as shown in Fig. 3, being sealed together when so arranged, the free end of 'fiap 10 being shown by the dotted lines 12 in Fig. 3. After these flaps are so connected the bottom flap 4 is folded upwardly over the end flaps and sealed thereto along its beveled side edges 6. Flap 2 is then folded down over flap 4 and the tongue 5 interlockingly engaged with tongue 3 as shown clearly in Figs. 1 and 2. The slit 8 in flap 2 extends inwardly a slight distance beyond the longitudinal slit 9 as shown at 8 so that tongue 5 may extend up thereinto to expose the lower edge of tongue 3 when the envelop is sealed as is shown clearly in Figs. 1 and 2.

It will thus be seen that when an envelop is constructed as above described, and the flaps united in the manner set forth, the contents thereof cannot be reached or tampered with without detection, it being understood that flap 2 is sealed along its beveled side edges and at its truncated terminal and that the flap 5 is sealed over flap 3.

These envelops while very simple in construction and cheap to manufacture will afford ample protection to their contents and insure its safe transportation through the I mails.

From the foregoing description, taken in connection with the accompanying drawings, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains and while 1 have described the principle of operation of the invention together with the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made as are within the scope of the claimed invention.

I claim An envelop having lapping flaps with slits extending inwardly from their free edges transversely of the flaps, said slits then being extended at right angles longituclinally of the flaps to form interlocking In testimony hereof I afiix my signature tongues, the transvlerse slit of one fla-p eX- in presence of two Witnesses.

tendin beyond t e longitudinal slit to adapt the cooperating tongue to extend JOHN HALL 5 therelnto a sufl1c1ent chstance to expose the ltnesses' free edge of the other tongue when the en- P. M. GATE, velop is sealed. 0. P. HUGHES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent& Washington, D. (2. 

